I had a vivid lucid dream last night. In the dream, I met a friend of mine and we exchanged some basic talk. I'm wondering if this was an astral projection/OBE (although I become conciseness during the experience) or it was just a dream (not leaving the body). I sill cannot quite get the difference between a dream and being out of the body in the astral.
My second question is if my friend was out of the body in the astral as well, or he was only in my imagination? (he didn't remember such a dream after I called him)

Thanks!